Ventilator assembly and method of installing same

ABSTRACT

The invention relates to a ventilator assembly and method for removing kitchen exhaust flumes entrained in a moving air stream from an, area surrounding a cooking unit. A roof-top blower moves the air stream from the cooking area through an air duct to the atmosphere. An overhanging hood defines a ventilation opening located above the cooking unit. One or more air vents are formed in a top wall of the hood and communicate with the air duct. The hood back panel has upper and lower longitudinal flanges, the lower flanges of which nests in a wall-mounted underlying first bracket securely earlier mounted on the kitchen side wall, while the hood upper flange is overlapped and retained by a second bracket holding the hood in an upright functional position.

CROSS REFERENCE TO OTHER APPLICATIONS

This is a continuation-in-part of my examined copending parent case U.S.Ser. No. 10/885,391, filed Jul. 07, 2004 of the same title.

BACKGROUND OF THE INVENTION

The invention relates to a ventilator assembly, and a method forremoving exhaust fumes from an area surrounding a cooking unit,particularly such as are used in restaurants and other commercial foodpreparation areas. Such assemblies are known in the art, and typicallyinclude a ventilator hood located above the cooking unit and attached toa bearing and/or overhead wall of the kitchen. A typically prior artassembly includes a roof-top outside blower in communication with thehood to pull air from the cooking area to the outside. Kitchen exhaustfumes generated by the cooking unit and entrained in the air stream arepulled upwardly through the ventilation opening of the hood to theatmosphere.

A ventilator assembly of the present invention is particularly suitedfor use in a fast food restaurant where food is prepared in largequantities on an open fryer or grill surface or in a deep fryer. Thismethod of cooking produces grease-contaminated, exhaust fumes, whichmust be removed upwardly away from the cooking area. Once removed fromthe cooking area, the fumes are captures, and the filtered air stream isdispersed into the atmosphere outside of the restaurant.

Prior art ventilator assemblies are subject to several disadvantages andstruggle to meet safety standards. The well-recognized, and followed,NFPA Code 96, directed to kitchen exhaust hoods, does not allow forneeded wall fasteners to penetrate hood panels without taking addedsteps to ensure there are no fumes or grease leakage from the hoodinterior. Such fastener preclusion avoids the resort to panel weldingand polishing. Towards this end, hood makers resort to top-mountedbrackets to hold up the hood securely. If such prior art specialbrackets/rods are not used, it is difficult to meet the NFPA Code 96installation constraints.

To confirm to their needs, the prior art hoods are suspended fromkitchen ceiling using externally mounted brackets with connectingdepending rods. Less complex, but still effective means of meeting NFPAcodes are desirable and are addressed by the present invention.Presently taught exhaust hoods are adapted to reduce effort ininstallation and to do so: (1) Make the use of costly hanging rodsunnecessarily; (2) ease hood positioning to confirm to Code demands; (3)and preclude resort to added welding to fire-proof external panelpenetrations by fasteners through the hood panels themselves.

BACKGROUND OF THE INVENTION

The patent literature contains, inter alia, Lambertson U.S. Pat. No.6,371,106 (issued April 2002), which is also directed to a speciallyconfigured exhaust hood apparatus (such was cited during the pendency ofthe parent application '106). The specification thereof does disclose aback panel (56), a top panel (40), a front panel (50), but only a singleside panel 46 (FIG. 4) and is depicted, these are air vents 38 in thetop panel and related air ducts 42,43, and a single lower edge channel58 integral with back panel 56, which panel is offset directly from rearwall 18, as is upper edge flange 42. Flanges 42 and 48 are provided forbearing wall 18 attachment.

This hood configuration is taught as being a closure “which allows forthe cutting and welding of the hood enclosure to the ductwork,” (Seeabstract).

What is clearly lacking in the citation is an intervening back panel,one that is first mounted on the kitchen support wall, to wit, elongate,vertical panels 42A-42C present (FIGS. 3 and 10), of the presentteaching, which are premounted via upper linear bracket 48 and lowerlinear bracket 51 (FIG. 4). The sanitary anesthetic advantages of thediscrete sheet metal back panel are manifold. It is upon thepre-installed support surface, that the ventilator assembly of thepresent invention is predicated for utility. The claimed integralassembly of the present invention includes a discrete back panel.

Sonntag U.S. Pat. No. 2,487,607 (of November 1949) is directed to aventilator hood installation. It necessarily discloses a number ofspaced-apart nails 13, that engage a support wall and a flange of thehood having no U-shaped channel. However, this citation is a quitedissimilar type of hood.

OBJECTS OF THE INVENTION

It is an object of the invention to provide a ventilator assemblylocated above a cooking unit which is handily installed and stilleffectively draws away kitchen exhaust fumes from an area surroundingthe cooking unit.

Another object of the invention is to provide an exhaust hood assemblyand installation method therefore that allows for easy installation ofan off-the-shelf exhaust hood structure by service persons in the field.

It is a further object of the invention to provide a method for moreprecisely positioning off-the-shelf exhaust hoods on the support backwall, without need of excessive adjusting and measuring, such asswinging or height adjustments to compensate for the standardtop-mounted hoods.

It is still another object to provide on top-mounted hoods that conformto an NFPA Code 96, but which require no penetration of the internalpanels of the hoods by fasteners, precluding the resort of welding ofhood to support brackets.

A yet further object of the invention is the preclusion to resort ofspecially configured, mounting brackets, which usually serve to effecthood mounting in order to maintain NFPA code requirements that exhausthoods must necessarily be conformed to.

SUMMARY OF THE INVENTION

According to the invention, there is now provided a hood-likeventilation assembly for removing kitchen exhaust fumes, in which thestove-overhanging, hood component defines the ventilation means to belocated over the kitchen stove, with the hood having a top panel withone or more air vents in the top panel; a front panel, spaced-apart,side panels, and a specially-configured, vertical back panel; the backpanel having along each of its lower and upper horizontal edges, asubstantially linear, projecting an upper first and lower second rigidflanges that maintain the hood box-like configuration, and which backpanel flanges serve as the mating and anchoring elements of the hood,adapted for the mounting thereof solely upon the back support wall forthe entire ventilation assembly.

There is further provided an underlying elongate first bracket member,having an open, channel-like configuration when viewed in vertical crosssection, with the first member being fixedly mounted on a vertical backsupport wall while nesting therein of the lower first rigid flange ofthe hood. An overlying, elongate second bracket member is provided witha configuration when seen in vertical cross section, which is adapted toengage and maintain the upper second rigid flange of the back panel inclose abutment with the back support wall, and a fume and grease filterelement positioned transversely within the venting hood and adapted forremoving the fumes from the moving air stream during the course ofventilation hood utilization.

In a preferred embodiment, the lower first bracket member, with itschannel-like vertical configuration, engages the flange-like dependingprotrusion of the lower horizontal edge of the hood, with the firstbracket member being sized to secure the depending protrusion in closecontact. Also in a preferred embodiment, the depending protrusion of theback panel lower edge is provided with an outwardly slanted leadingedge, adapted to contact and retain the lowermost edge of the hoodfilter element. Also in a preferred embodiment, the upper second bracketmember is provided with a first longitudinal segment adapted to engageand retain the upper second flange of the back panel in abutment to thesupport wall, while an integral second longitudinal segment of thesecond bracket is fixedly mounted to the wall for the vent assembly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side elevational view in view in vertical section of abuilding venting system, including a conventional prior art exhaust ductassembly for a kitchen depicting the off wall location of the hoodventing means;

FIG. 2 is a schematic, side elevational view of how a venting hoodassembly of the venting system of FIG. 1 that was erected using priorart installation components and procedures;

FIG. 3 is a perspective view of an odor venting hood mounted upon apaneled bearing wall, also depicting the exhaust duct cutout in the hood(duct omitted for clarity of view), such hood having been installedaccording to use of the components of present invention;

FIG. 4 is a perspective and exploded view of the operative components ofthe hood assembly of FIG. 3, seen in the present invention;

FIG. 5 is a front elevational view in the vent hood mounting procedure,depicting the initial step of placing the underlying hood elongatesupport bracket now being as seen mounted on the pre-paneled bearingwall of FIG. 4;

FIG. 6 is an enlarged end elevational view in vertical section of theinstalled venting hood of FIGS. 3 and 4, better depicting injuxtaposition all the assembled components of the already installedventing system.

FIG. 7 is another enlarged and-elevational view, in vertical section,better showing how the planar filter element is functionally positionedand how the hood assembly is mounted securely upon the bearing wall;

FIGS. 8U and 8L are a broken-out, enlarged views in vertical sections ofthe lower and upper support means for the hood depicting in greaterdetail the dual means of hood securement; and

FIGS. 9U and 9L are a broken-out enlarged view in vertical section, alsoof the upper and lower secured bracket support means for the hood, seenin greater detail, depicting the dual means of hood assembly for securewall mounting;

FIG. 10 is a broken out, view of an alternate upper channelconfiguration adapted for installing and fixedly mounting of thedepicted ventilator back panels on an abutting, bearing wall, theearlier embodiment of which is already depicted in FIG. 3 hereof.

FIG. 11 is a broken out, partial vertical elevation of the initial stepof mounting the usually stainless steel panel directly to a bearingsidewall, prior to the affixing of the hood-supporting horizontalchannels to the panel themselves, and depicting the spaced-apart,depending component of the inverted retainer channel;

FIG. 12 is a subsequent vertical elevational view of the wall-mountedupper bracket of FIG. 11, depicting the upper flange of the hood backedge, being nested within the upper support channel for the hoodassembly;

FIG. 13 is a perspective, broken out view of the upper components of thehood assembly, depicting the back panel as being directly mounted on thebearing wall, along with the mounted hood flange itself, now assembled,just as earlier described in relation to FIGS. 4 to 9, directed to theearlier embodiment and;

FIG. 14 is a top elevational view of the mounted modular panels, insitu, are shown in horizontal cross-section, so to depict thejuxtaposition of the modular metal sidewalls on the building supportwall.

DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT

A conventional exhaust duct assembly 10 enclosed by a vertical conduitis shown schematically in the prior art arrangement of FIG. 1. Ittypically included a vertically-aligned exhaust fan duct 12 thatpenetrates one or more building floorings 16 and 24, and has ensconcedat the upper longitudinal end, a powered outward exhaust fan 18, with anassociated grease trap (not seen). The exhaust is mounted outside theroof 20 on the building. Proximal to the lower longitudinal end 12L ofthe duct assembly 10 is a bearing side wall 22, with a thereon mountedexhaust hood, generally 24, being substantially offset above the basefloor 14, and mounted overlying a cooking devise 26, such as acommercial, multi-burning cook stove. Such an exhaust hood 24 isessential feature of all commercial kitchens, which must conform tobuilding code requirements, including use of non-combustible materialsfor constructions and particularly proper modes of arranging andsecuring the operative components.

In the schematic side elevational view of FIG. 2, there is depicted atypical set up for ceiling mounting and wall securing of the ventinghood in the kitchen area above a stove, in the manner of the prior artinstallations. Hood 24A is suspended by a pair of cables, 28L and 28R,which, in turn, are anchored to overhead ceiling fixtures, 30L and 30R,at the upper cable ends; and below to mounting fixtures 32L/R, eachaffixed to the upper horizontal panel 34 of the prior art venting hood24A. Also several elongate bolts, like 34U/L, connect the hood backpanel 34B to the support sidewall 36, which wall abuts the hood, andwhich also overlies the stove 26A itself. The complexity and workmanshipneeded to safely and durably install such a kitchen exhaust hood ismanifestly significant when looking at the prior art configuration ofFIG. 2.

In the present case, a similarly configured exhaust hood 38, but havingbeen wall mounted according to the present invention, is depicted in theperspective view of FIG. 3. A bearing side wall 40, perhaps of stackedbricks as depicted, provides a solid facade for supporting a variablenumber of planar metallic modules, 42A/B, and the associatedmodule-mounted, exhaust hood 38 of the present configuration. Theside-wall fastened planar modules, 42, serves as the mounting surfacefor the hood, while there provide a firmer support manes against thebrick wall for the use of conventional fasteners (not seen). As is wellknown in the art, there is provided a blower apart from the cooking areain communication with the atmosphere from the cooking area. Such aconventional blower means is described in Sonntag U.S. Pat. No.2,487,607 (1949).

Note, that the present hood is solely wall-mounted, which precludes theneed for the use of ceiling-depending support rods, 28L/R of FIG. 2. Theupper panel 44 of hood 38 is also provided with a rectangle shaped,cutout 46, which will be operably joined at installation time with aventing duct (not shown), but arranged to look like the exhaust fan duct12L of FIG. 1. Air vents are formed in the top of wall hood 38, that arein communication with the air exhaust duct 12 of FIG. 1. An underlyingkitchen stove (not seen) is usually positioned under exhaust hood 38, asdepicted in FIGS. 1 and 2. The upper edges of conjoined modules 42 aresecured to back wall 40 (FIG. 2) by rigid channel member 48 with pluralfasteners, like metal screws, 49A-F.

In the exploded view of FIG. 4, the key installation components ofmountable exhaust hood 38, to be configured and conjoined according tothe present invention, are conveniently depicted. Such includesunderlying, an elongate rigid support bracket 50, which present anupwardly oriented, open channel 52, which trough is sized to nest easilythe first lower rigid flange 54 of the back panel 56 of the hood 38.Seen in vertical cross-section of FIG. 6, bracket 50 presents aU-shaped, elongate trough 53. This lower support bracket 50 also appliesplural fastener elements, 58A-D, which will affix this elongate bracketto rigid back wall modules 42A/B. Horizontal U-shaped channel 51, andwall-fastened, fasteners 53A to 55E, serve to support the lower edges ofvertical planar panels 42A/B/C.

Also seen is a standard particulate filter 60 normally positioned whollywithin the hood 38, as depicted in FIG. 1, being in aninwardly/downwardly oriented juxtaposition. The filter element itselfpresents a serrated/recessed surface, such as seen in corrugatedcontainers for products. Such filters are available from ComponentHardware Group of Lakewood, N.J. However, the filter does not comprise apart of the present invention, but is a standard component ofstove-exhaust hood assemblies. Note the single squared opening 46 inupper stove panel to hood panel 44, to which an exhaust duct assembly(not seen) will be operably connected.

Hood 38 is seen as oriented ready to be nested along its lower flange54, in the to be side wall mounted, horizontal, support bracket 50.

In the elevational view of FIG. 5, is shown the first step in achievinga side wall mounted exhaust hood by securing a first elongate, rigidsupport bracket 50 to side wall 42, at a height of up to four feet abovethe surface of a cooking stove (not seen). Underlying bracket 50 is wallmounted fixedly with conventional fasteners, 58A/D, at spaced-apartlocations, perhaps coincident with any vertical studs (not seen) towhich the support wall module 42 is abutting.

Also seen above hood 38 is a horizontally-aligned, elongate rigidbracket 62, which functions as a retaining and flange-pinning means uponengaging the uppermost rigid flange 64 of hood 38 (FIG. 4). An overlyingbracket 62 has two elongate segments, 62U and 62L. The lower segment 62Lis offset from the conjoined integral upper segment 62U, so as to beadapted to overlap upper flange 62 of hood 38. After the hood low flange54 is nested in the underlying bracket 50, the hood is rotated to theupright position depicted, being temporarily, and manually held there.With hood 38 now flush against support wall 42; the upper bracket 62 ispositioned overlying flange 64, then is affixed to the support wall 42along the uppermost segment, 62U, which flange is in flush contact withthe support wall 42.

The final result is depicted in FIG. 3, where the engagement of upperbracket 62 and flange 64 is evident.

Similarly, a plurality of mounting fasteners, 66A-66D (bolts or screws)are employed to anchor offset bracket 62 to the support wall, along itsupper segment 62U. The vertical cross sectional configuration of theupper bracket 62 is first depicted in FIGS. 8U and 9U.

In sum, first installing the lower bracket 50 (FIG. 5) fixedly to thesupport wall; then hood 38 is nested along its lower flange 54, intrough 52 of underlying support bracket 50; the hood is rotated to theupright position until upper flange 64 is in contact with back wall 42and is held thereto. Upper bracket 62 is arrayed overlapping hood upperflange 64, then fastened to the back wall. After both well-mountedbrackets are fixedly set, then the transient manual support for themounted hood is ended with the end result depicted in FIG. 3.

In the side elevational view of FIG. 6, a means of positioning andretaining a filter element 60 is depicted. Depending from upper hoodpanel 44 is a clamp-like, bracket 70 which engages the upper outwardedge 72U of filter 60. The lower horizontal edge 72L of the filtercontacts hood back panel 56 and also abuts an inclined leading edge 74of lower flange 54 of panel 56 support.

The enlarged vertical sectional view of FIG. 7 shows the details of thedual opposing, horizontal brackets supporting hood assembly 38, andassociated filter 60. The lowermost flange 54 of hood 38 present aU-shaped, depending projection 54P, which projection is sized to nestsnugly in the complemental U-shaped channel 52 of lower support bracket50. Projection-54P is further provided with an outwardly slanted leadingedge 74, which contacts the outer surface of the filter lower edge 72L,and holds the inner surface resting against back panel 56, until thelatter is manually dislodged for servicing or replacement. Thisfacilitates the channel of protrusion 54P serving as a grease trap.

FIGS. 8U and 8L are broken-out enlarged view of the major supportbrackets. Better seen is the trough-like configuration of lower bracket50, and the offset, dual segmented, configuration of upper bracket 62.Similarly, FIGS. 9U and 9L depict, in finer detail, the mating of thehood support components. Flange-like protrusion 54P nests within brackettrough 52, while the hood protrusion also contacts filter lower edge72L; hood upper flange 64 contacts abutting support module 42; andwall-anchored modules 42 abut with overlapping upper bracket 62, whichretains upper flange 64.

In FIG. 10 is seen an alternate means of bracket-mounting of both theback panels and the hood assembly, with the several operative partsbeing depicted. An inverted U-shaped, linear horizontal bracket 80U isconventionally affixed, directly to the bearing wall 40A, using fastenerset 82A-D. A like U-shaped bottom channel (not seen), is aligned at thebottom location of hood 38A, as depicted in FIG. 4. As to the upperedges 84A/B of panels 42A/B, the inverted second U-shaped bracket 80U isaffixed about 2 inches higher then the upper edges of panel 84B, andbeing directly aligned with the U-shaped lower bracket planar. Planarpanel, 42A/B, are positioned by lifting them snugly into the upperbrackets 80U, while concurrently clearing the opposing lower supportbracket, so that the panels are pivoted manually into full contact withbearing wall 40A, (See FIG. 12) then the lower edge of the panel isdeposited into a lowermost horizontal channel (See FIG. 13), as seen inFIG. 4 for the first embodiment.

To maintain sanitary conditions, the metallic sheet-panels that form theerected sidewall, a vertically oriented, linear bracket 90A (having thelike cross configuration of upper bracket 82) is applied using fastenerset, 92A/D. These side brackets serve to clamp left-side panel 42Avertically along its edge 92A, against bearing wall 42A. Bracket 90Bengages the right side edge of the panel sidewalls.

A similar, vertically oriented elongate bracket 90B (See FIG. 13) isemployed on the opposing vertical edge of panel 42B. Added panel modulesare used to provide the desired widths of the wall mounted panels.

The stainless steel panel support is now ready for mounting of the hoodassembly 38A, itself (FIG. 11). This is effected exactly as described inconnection with the first embodiment of FIG. 3-7. The ultimate result isdepicted in FIGS. 10 & 13. The just described method facilitates planarpanels being affixed to the wall 40A itself, without creating anyperforations in any section of a large panel. This maintains panelintegrity, precludes fumes deposition between bearing wall and thepanels mounted thereon.

As to the manner of ventilator assembly of FIG. 13, one picks the walllocation desired for installing hood assembly 38A, usually centered overthe range. First install lower elongate channel 80U (as in FIG. 4) uponthe selected building wall in a permanent manner and with a horizontalorientation. The elongate lower channel 80C, is typically some 60inches, in its transverse dimension, wider then the lateral width ofhood 38A, within reason. An upper horizontal channel 80U is subsequentlythe same length as the descended opposing lower channel 80L, but isplaced in a reverse orientation, to present an open keyway to the lowerpanel edge 42A. The upper channel is installed, 80U, and is put in totalparallel to the lower channel 80L as in FIG. 4. Also, the upper channelis positioned and affixed at a vertical height equal to that of thepanel length plus about two inches. Because of the extended spacebetween the modular upper edge and the upper channel edge, it ispossible to then insert one or more back panels to reach a lateral widthsubstantially matching that of the upper and lower channel elongatelengths.

In FIG. 14, there is depicted a top down, cross sectional view of thesupport wall modular panels of FIG. 13, such as, FIGS. 42A/B/C adjoiningthe support wall. Note that the longitudinal edges of each such verticalpanel are double flanged, as indicated at elongate segments 86A/B, onpanel 42A/B, which encloses the right hand vertical edge of panel 42A.Similarly, vertical edge flange 86A/B abut the flanges on panel 42C.Opposing panel flanges 84A/B adjoins flange 82A of vertical panel 42A.On the external lateral sides of panels 42A/B/C, are the depictedvertical channels 90A and 90B, enclosing vertical panels 42A/B/C,respectively. The just described configuration of these modular panelssupport the mounted hood fully, when it's mounted thereon. Such a panelassembly also passes NFPA * Code 96, and NSF** Code B.O.C.A., and theInternational Mechanical Code.

* National Fire Protection Association; ** National Sanitary Foundation.

1. A ventilator assembly adapted for mounting on a vertical support wallfor removing kitchen exhaust fumes and entrained in a moving airstreamfrom an area surrounding a cooking unit, including a rooftop blower formoving the airstream through an air duct to the atmosphere, saidventilator assembly comprising: (a) an overhanging venting hood defininga ventilation opening located above said cooking unit, said hoodincluding a hood back panel, spaced-apart, two side panels, and aconnecting front panel (b) at least one planar panel secured verticallyto a kitchen bearing wall and adapted to serve as a fixed support uponwhich the hood back panel of the ventilator assembly is to be fixedlymounted for regular usage; (c) one or more air vents formed in the toppanel of said hood which are in communication with the air duct; (d) theback panel being provided with a lower and an upper substantially linearedges which abut the bearing wall; (e) an underlying elongate firstchannel member, having an open channel configuration, when seen invertical cross section, and being fixedly mounted on the planar panel,while supporting a lower first flange of the hood back panel; (f) anoverlying second top channel member having a wall offset configuration,when seen in vertical cross section, comprising first and secondlongitudinal segments, with the depending longitudinal segment thereofadapted to engage and retain an upper second flange of the hood backpanel in abutment to the planar panel, and (g) a third underlyingchannel member having an open channel configuration, and directlymounted on the bearing sidewall, while supporting the lower edge of theabutting one planar panel; (h) a fourth overlying channel member havingan inverted U-shaped open channel configuration, directly, mounted onthe bearing sidewall, while supporting the upper edge of the planarpanel on the bearing sidewall; and (i) a fumes filter element positionedtransversely within the venting hood and adapted for removing fumes fromthe moving air stream during the course of venting hood utilization; 2.The ventilator assembly claim 1 wherein there is a further included: (a)a complemental pair of rigid, elongate support brackets adapted forsupplemental support of the planar panel, the first of which bracketsencloses and secures one vertical edge of the conjoined planar panelset, and the second bracket encloses and secures the opposing verticaledge of the planar panel set.
 3. The ventilator assembly of claim 1,wherein the third channel member is positioned on the planar panel at avertical height so as to permit the hood back panel upper flange to beinserted upwardly so that the panel lower flange can be slipped into thelower first channel.
 4. The venting hood of claim 1 wherein both of thefirst and second flange members are fabricated from stainless steel. 5.The venting hood of claim 1 wherein each of the flange members issecured to the support wall by a number of spaced-apart fasteners whichengage vertical studs behind the vertical support wall.
 6. The ventinghood of claim 1 wherein the first flange of the hood is provided with aU-shaped channel which is sized to seat firmly in the trough of thefirst channel member.
 7. The venting hood of claim 1 wherein the firstflange is further provided with an outwardly projecting, leading edgewhich is adapted to contact and retain in place one lowermostlongitudinal edge of the filter element.
 8. The ventilator assembly ofclaim 1 wherein each vertically-aligned planar panel, when conjoinedwith a second planar panel, is provided with longitudinal flanges alongthe vertical edges thereof, permitting a sealing contact betweenabutting planar panel s.
 9. A method of removing kitchen exhaust fumesentrained in moving air stream from an area surrounding a cooking unit,comprising the steps of: (a) mounting a blower means outside of thecooking area and in communication with the atmosphere for moving airfrom the cooking area to the atmosphere; (b) mounting an elongate firstlinear bracket on the sidewall selected to support an overhanging hoodlocated to just above the cooking area, said first channel beingprovided with an open channel adapted to receive an elongate lowerflange which is integral with the overlying hood; (c) mounting the hoodadjacent the sidewall along its lower flange which lower flange engagesan open channel, first bracket as the initial hood position; (d)rotating the linearly supported hood into its normal upright secondposition adjacent the support wall while retaining same by manual meansin that second position; (e) mounting an elongate second linear bracketon the sidewall so as to overlap an upper flange which is integral withthe upright hood; (f) securing the second bracket to the sidewall withconventional fastening means; and, (g) then removing the manual meansinitially used to retain the hood upright.